I had my printer working fine and I made a silly mistake when tired.
I plugged one of the limit micro switches in across the positive and negative pins instead of the signal pin.
A puff of smoke. Can't see any damage anywhere on the board and the diode seems to be OK.
The printer will work fine in everyway, except now when I disconnect the USB the printer will reset and power down loosing all that has been printed.
I normally run off the LCD controller and don't have the computer connected. It looks like I now need power from the USB in order for the electronics to work.
Anyone got any ideas what I have blown (if anything) or how to fix the problem?
I plugged one of the limit micro switches in across the positive and negative pins instead of the signal pin.
A puff of smoke. Can't see any damage anywhere on the board and the diode seems to be OK.
The printer will work fine in everyway, except now when I disconnect the USB the printer will reset and power down loosing all that has been printed.
I normally run off the LCD controller and don't have the computer connected. It looks like I now need power from the USB in order for the electronics to work.
Anyone got any ideas what I have blown (if anything) or how to fix the problem?